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scsi: mac_scsi: Enable scatter/gather by default

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Now that FLAG_DMA_FIXUP has itself been fixed up, it can be used to enable
scatter/gather. Increase the default value for sg_tablesize to SG_ALL for
those systems which are compatible with FLAG_DMA_FIXUP.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Link: https://lore.kernel.org/r/f155ba5ce93055cbc6ac6d4026673f40f826edb8.1723001788.git.fthain@linux-m68k.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Finn Thain 2024-08-07 13:36:28 +10:00 committed by Martin K. Petersen
parent 5768718da9
commit 2ac6d29716
1 changed files with 7 additions and 1 deletions
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8
drivers/scsi/mac_scsi.c
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@ -432,7 +432,7 @@ static struct scsi_host_template mac_scsi_template = {
.eh_host_reset_handler = macscsi_host_reset,
.can_queue = 16,
.this_id = 7,
.sg_tablesize = 1,
.sg_tablesize = SG_ALL,
.cmd_per_lun = 2,
.dma_boundary = PAGE_SIZE - 1,
.cmd_size = sizeof(struct NCR5380_cmd),
@ -470,6 +470,9 @@ static int __init mac_scsi_probe(struct platform_device *pdev)
if (setup_hostid >= 0)
mac_scsi_template.this_id = setup_hostid & 7;
if (macintosh_config->ident == MAC_MODEL_IIFX)
mac_scsi_template.sg_tablesize = 1;
instance = scsi_host_alloc(&mac_scsi_template,
sizeof(struct NCR5380_hostdata));
if (!instance)
@ -491,6 +494,9 @@ static int __init mac_scsi_probe(struct platform_device *pdev)
host_flags |= setup_toshiba_delay > 0 ? FLAG_TOSHIBA_DELAY : 0;
if (instance->sg_tablesize > 1)
host_flags |= FLAG_DMA_FIXUP;
error = NCR5380_init(instance, host_flags | FLAG_LATE_DMA_SETUP);
if (error)
goto fail_init;